Four Wheel Drive Dual Battery Setups
(M4x4A - Divide Ride 7/26/2003 near Boulder,
a four wheel drive vehicle, it is very easy to get yourself deep
into remote places. This is the last place
you want to be when you have your only
battery quit on you. There are
many reasons that a battery can can run flat. But few
devices will provide starting and operating security for all
typical causes. Most will provide this security only
under certain failure conditions, but not others.
When you venture out into remote places, you should prepare with a
backup battery. You wouldn't travel without a spare
tire. Some travel with spare gas cans. So
why not assure yourself of starting power with a spare battery.
Many 4 x 4 vehicles have dual battery setups for that one sad time
when their main battery just will not perform. Other
4 X 4 owners use the dual battery system to provide extra power
during winching, or to ensure starting power after winching.
In the past, these setups have been far from ideal.
Some people have used simple diode isolators. But, for
those who recognize the detrimental effects that diode isolators
have on their battery's performance and life expectancy, they have
opted for solenoid or relay type systems. Neither
system offers the ideal automatic operation with protection
even from alternator failure, yet still provide
performance all in one package. Either system has
their own sacrifices. So the debate has continued and some
have chosen diode isolators, while others have have chosen relay
systems, and still others have chosen heavy duty switches along
with diode isolators.
The Hellroaring Backup Battery Setup
Now there is a better system! The
Hellroaring Battery Isolator/Combiner.
The Hellroaring Battery Isolator/Combiner model BIC-95300B
is essentially dedicated to a dual battery Backup battery setup.
As a four wheel drive vehicle backup battery system, it installs
very easily. It will provide high
charge rate capability to both
batteries. When the main battery becomes
discharged, just flip a micro-switch to energize the backup
battery and you can start
your gasoline engine. If your alternator
had failed, and you started your vehicle with jumper cables,
your engine would quit very soon after removing the jumper
cables!. Not so with the Hellroaring system.
You should typically have at least 2 hours of operating time with
a 50 AH backup battery if you keep unnecessary accessories off.
For vehicles with a Diesel engine, two
BIC-95300B units must be connected in
parallel to achieve full backup starting. Typically Vehicles with
Diesel engines are more likely used for camper type loads and
therefore, one BIC-95150B is excellent
for an Auxiliary battery setup (not backup starting).
Excellent Choice for Electric Winches
four wheel drive vehicles have an electric winch as an accessory.
In some situations, such as winching from water, you must winch
without the engine running. A backup battery can serve
either of two purposes. One is to ensure that you have
in the event you use all the energy from the main battery during
winching. The other is to provide extra
power during winching and minimize the drain
on a single battery. In either of these cases, a
backup battery and a Hellroaring Battery Isolator/Combiner model
BIC-95300B is an excellent choice. It
performs all these functions in a single
For this backup battery setup, we recommend that you connect
all normal operating loads and the winch to the main battery
system. Then connect the backup battery all by itself
just for backup. Connect the Hellroaring Battery
Isolator/Combiner to the backup battery and your starter as shown
in Figure 1. And to simplify installation of the
Remote functions, we now have available a Remote
Module kit as an accessory.
With this setup, you will have the security of a backup battery
fully capable of cranking your gasoline engine
even with a completely discharged main battery.
Read some customer feedback using this
To learn about how you can extend the life of your batteries,
click on this link:
Extend the life expectancy of
Read what 4wdriver.com
has to say about the Hellroaring Backup system. See the product
review for 5/28/99.
Read what the people at Off-Road.com has to say
about the Hellroaring products and service. See their product
Yes, send me one! - Sales
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